Can be. Decent lenses to really bring out the quality in Canon can start at about $3000 for the lens only.
E.g. I have a 400D, it was about $1200 when I got it. It came with a basic 18-55mm lens. I also got:
A 17-85mm IS USM lens, thats $1099
A 70-300mm IS USM lens, thats $1199
A 50mm compact macro, thats $510
A battery grip, thats $300